Fixed Cos and Tan functions.
Added some commented debug prints for the caveman-debugging.
Fixed Window::resize creating recreating the window when it's not needed. Added Window::cls function for clearing the window.
Cleaned fpstest.cb.
Changed the allegro library path to "runtime/allegro-5.0.9" instead of "runtime/allegro-5.0.9-mingw-4.7.0".